viii. INTRODUCTION. 



Agricola did not confine his interest entirely to medicine and mining, 

 for during this period he composed a pamphlet upon the Turks, urging their 

 extermination by the European powers. This work was no doubt inspired by 

 the Turkish siege of Vienna in 1529. It appeared first in German in 1531, 

 and in Latin — in which it was originally written — in 1538, and passed through 

 many subsequent editions. 



At this time, too, he became interested in the God's Gift mine at 

 Albertham, which was discovered in 1530. Writing in 1545, he says® : 

 " We, as a shareholder, through the goodness of God, have enjoyed the 

 " proceeds of this God's Gift since the very time when the mine began first 

 "to bestow such riches." 



Agricola seems to have resigned his position at Joachimsthal in about 

 1530, and to have devoted the next two or three years to travel and study 

 among the mines. About 1533 he became city physician of Chemnitz, in 

 Saxony, and here he resided until his death in 1555. There is but little 

 record of his activities during the first eight or nine years of his residence in 

 this city. He m.ust have been engaged upon the study of his subjects and 

 the preparation of his books, for they came on with great rapidity soon after. 

 He was frequently consulted on matters of mining engineering, as, for instance, 

 we learn, from a letter written by a certain Johannes Hordeborch', that 

 Duke Henry of Brunswick applied to him with regard to the method for 

 working mines in the Upper Harz. 



In 1543 he married Anna, widow of Matthias Meyner, a petty tithe 

 official ; there is some reason to beUeve from a letter pubhshed by Schmid,* 

 that Anna was his second wife, and that he was married the first time at 

 Joachimsthal. He seems to have had several children, for he commends his 

 young children to the care of the Town Council during his absence at the 

 war in 1547. I^ addition to these, we know that a son, Theodor, was bom 

 in 1550 ; a daughter, Anna, in 1552 ; another daughter, Irene, was buried at 

 Chemnitz in 1555 ; and in 1580 his widow and three children — Anna, 

 Valerius, and Lucretia — were still living. 



In 1544 began the publication of the series of books to which Agiicola 

 owes his position. The first volume comprised five works and was finally 

 issued in 1546 ; it was subsequently considerably revised, and re-issued in 1558. 

 These works were : De Oriu et Causis Subterraneorum, in five " books," the 

 first work on physical geology ; De Natura Eorum quae Effluunt ex Terra, in 

 four " books," on subterranean waters and gases ; De Natura Fossilium, in 

 ten " books," the first systematic mineralogy ; De Veteribus et Novis Metallis, 

 in two " books," devoted largely to the history of metals and topographical 

 mineralogy ; a new edition of Bermannus was included ; and finally Rerum 

 Metallicarum Interpretatio, a glossary of Latin and German mineralogical 

 and metallurgical terms. Another work, De Animantibus Subterraneis, 

 usually pubhshed with De Re Metallica, is dated 1548 in the preface. It 



'De Veteribus et Novis Metallis, Book I. 



'Printed in F. A Schmid's Georg Agrikola's Btrmannus, p 14, Freiberg, 1806. 



»0p. Cit., p. 8. 



